Get computed Width of an HTML Element

check if your browser/javascript supports Ajax.
For this we can use prototype's getTransport method.

A small example demonstrating inheritance in Javascript, complete with calling base class constructors and methods. For the more detailed description, visit http://www.adampresley.com.

A simple AJAX class. The code for the class is provided as well as example HTML and PHP code for usage.

Just a simple check to make sure that a person's email address matches their domain.

For example .. in a form you have 2 textboxs .. 1 for their website url, the other for their email address. This checks to see if the domains for the email address and the website url match.

Simple function to check for a valid email address. Makes sure the @ and a . are in the right place. There is most likely a perl package on CPAN that would be more extensive, but this happens to work for my uses.

Given a PHP array (even a deep nested array), returns a string representation of that array as JavaScript array. Useful when using PHP to output JavaScript.

Format fractional digits in a numbe

To debug javascript code we use alert() whereever needed and it irritates you while alerts values inside a loop and other places where more alerts are being shown and you have to press the ok button to pass / proceed on.
here is a simple way to get rid of the alerts dialogs and get the values outputed into another debug window.

Trim , Left trim (ltrim) and Right Trim (rtrim) in javascript